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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_RENDERERS_GPU_VIDEO_ACCELERATOR_FACTORIES_H_
#define MEDIA_RENDERERS_GPU_VIDEO_ACCELERATOR_FACTORIES_H_
#include <stddef.h>
#include <stdint.h>
#include <vector>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "gpu/command_buffer/client/gles2_interface.h"
#include "gpu/command_buffer/common/mailbox.h"
#include "media/base/media_export.h"
#include "media/base/video_types.h"
#include "media/video/video_decode_accelerator.h"
#include "media/video/video_encode_accelerator.h"
#include "ui/gfx/gpu_memory_buffer.h"
namespace base {
class SingleThreadTaskRunner;
class SharedMemory;
}
namespace gfx {
class Rect;
class Size;
}
namespace gpu {
struct SyncToken;
};
namespace media {
class VideoDecodeAccelerator;
// Helper interface for specifying factories needed to instantiate a hardware
// video accelerator.
// Threading model:
// * The GpuVideoAcceleratorFactories may be constructed on any thread.
// * The GpuVideoAcceleratorFactories has an associated message loop, which may
// be retrieved as |GetMessageLoop()|.
// * All calls to the Factories after construction must be made on its message
// loop.
class MEDIA_EXPORT GpuVideoAcceleratorFactories {
public:
class ScopedGLContextLock {
public:
ScopedGLContextLock() {}
virtual gpu::gles2::GLES2Interface* ContextGL() = 0;
virtual ~ScopedGLContextLock(){};
private:
DISALLOW_COPY_AND_ASSIGN(ScopedGLContextLock);
};
// Return whether GPU encoding/decoding is enabled.
virtual bool IsGpuVideoAcceleratorEnabled() = 0;
// Caller owns returned pointer, but should call Destroy() on it (instead of
// directly deleting) for proper destruction, as per the
// VideoDecodeAccelerator interface.
virtual scoped_ptr<VideoDecodeAccelerator> CreateVideoDecodeAccelerator() = 0;
// Caller owns returned pointer, but should call Destroy() on it (instead of
// directly deleting) for proper destruction, as per the
// VideoEncodeAccelerator interface.
virtual scoped_ptr<VideoEncodeAccelerator> CreateVideoEncodeAccelerator() = 0;
// Allocate & delete native textures.
virtual bool CreateTextures(int32_t count,
const gfx::Size& size,
std::vector<uint32_t>* texture_ids,
std::vector<gpu::Mailbox>* texture_mailboxes,
uint32_t texture_target) = 0;
virtual void DeleteTexture(uint32_t texture_id) = 0;
virtual void WaitSyncToken(const gpu::SyncToken& sync_token) = 0;
virtual scoped_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBuffer(
const gfx::Size& size,
gfx::BufferFormat format,
gfx::BufferUsage usage) = 0;
virtual bool ShouldUseGpuMemoryBuffersForVideoFrames() const = 0;
virtual unsigned ImageTextureTarget(gfx::BufferFormat format) = 0;
// Pixel format of the hardware video frames created when GpuMemoryBuffers
// video frames are enabled.
virtual VideoPixelFormat VideoFrameOutputFormat() = 0;
virtual scoped_ptr<ScopedGLContextLock> GetGLContextLock() = 0;
// Allocate & return a shared memory segment.
virtual scoped_ptr<base::SharedMemory> CreateSharedMemory(size_t size) = 0;
// Returns the task runner the video accelerator runs on.
virtual scoped_refptr<base::SingleThreadTaskRunner> GetTaskRunner() = 0;
// Return the capabilities of video decode accelerator, which includes the
// supported codec profiles.
virtual VideoDecodeAccelerator::Capabilities
GetVideoDecodeAcceleratorCapabilities() = 0;
// Returns the supported codec profiles of video encode accelerator.
virtual VideoEncodeAccelerator::SupportedProfiles
GetVideoEncodeAcceleratorSupportedProfiles() = 0;
protected:
friend class base::RefCounted<GpuVideoAcceleratorFactories>;
virtual ~GpuVideoAcceleratorFactories() {}
};
} // namespace media
#endif // MEDIA_RENDERERS_GPU_VIDEO_ACCELERATOR_FACTORIES_H_